Re: [Qemu-devel] [PATCH 23/25] qom: add realized property

[Andreas Färber]

Paolo,

Am 03.04.2012 13:15, schrieb Paolo Bonzini:
> Since we had to move the state field from DeviceState to Object, we cannot
> delay the implementation of the "realized" property.  The property is
> a trigger for two actions that propagate through the composition tree.
> "Realize" is called when the property becomes true, and propagates in
> pre-order; realize can fail if the values of the properties are not valid.
> "Unrealize" is called when the property becomes false, and propagates in
> post-order; unrealize cannot fail.
> 
> Unrealize is also called by object_deinit, as a separate step before
> finalization.
> 
> Realize/unrealize is separate from reset.  Reset propagation is a thorny
> issue of its own.  We expect classes that care to implement a reset method
> and call it from realize or realize_children, depending on whether
> pre-order or post-order is more appropriate.
> 
> This patch adds four methods (realize, realize_children, unrealize,
> unrealize_children) to ObjectClass, together with a default implementation
> of realize_children and unrealize_children.
> 
> Signed-off-by: Paolo Bonzini <address@hidden>

Since this patch is clearly an extended version of my realize patch
http://patchwork.ozlabs.org/patch/148752/, it should carry my SoB, as
reminded last night. If you don't want my SoB on the parts I didn't do -
namely unrealize and *_childen - then feel free to split the patch in
two. Simply dropping attribution in both cover letter and commit just
because I didn't get around yet to sending a v2 with those requests
addressed is not nice!

Patch 24/25 was done differently (calling realized = true from init
rather than the other way around) so this comment only applies to 23/25.

Andreas

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